package com.uicontrol;

import android.text.InputFilter;
import android.text.Spanned;

public class InputFilterMinMax implements InputFilter {

  private int min, max;

  public InputFilterMinMax(int min, int max) {
    this.min = min;
    this.max = max;
  }

  @Override
  public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
    try {
      int input = Integer.parseInt(dest.toString() + source.toString());
      if (isInRange(min, max, input))
        return null;
    } catch (NumberFormatException nfe) {
    }
    return "";
  }

  private boolean isInRange(int a, int b, int c) {
    return b > a ? c >= a && c <= b : c >= b && c <= a;
  }
}
